usage

The manner in which words and phrases are actually spoken or written within a linguistic community.

• Modern dictionaries base their definitions on contemporary usage rather than rigid historical rules.

The action of using something, or the amount of a resource consumed over time.

• Installing efficient heat pumps helped the family reduce their electricity usage during the winter.

A customary or habitual practice established over a long period.

• Under traditional maritime usage, the captain holds ultimate authority while the vessel is underway.